/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/ViewModels/NiagaraUserParameterPanelViewModel.h
void Initialize ( [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [FNiagaraSystemViewModel](API\Plugins\NiagaraEditor\ViewModels\FNiagaraSystemViewModel) > InSystemViewModel )